Method size

lib/util/StackedMap.js:194–197

* Returns the number of visible keys after collapsing the stack. * @returns {number} number of keys

()

	 * @returns {number} number of keys
	 */
	get size() {
		this._compress();
		return this.map.size;
	}

	/**
	 * Creates a child `StackedMap` that sees the current layers as its parent